Question about 1998 Pontiac Sunfire

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Pontiac Sunfire 1998 - doesn't start engine - anti theft system locked

Hi, I'm owner of a Pontiac Sunfire 1998, Standard transmision 5 gears, without AC. I stopped the car for fifteen days to fix it of many subjects: I've changed bearings and give maintenance to the starter motor and to the generator. First I've disconnected the battery.

After this fifteen days I've reconnected the battery to take the car to a mayor motor cleaning (it spills oil). The engine doesn't start, the "volts" light (battery sign) flashes unconstantly (like if it has a bad connection) and the "theft system" led remains on (not blinking) all time.

I've realized that maybe this protection was enabled because of the battery connects and disconnects, so I've brought a fuel injection engineer to get the computer scanned and erase the error code...

...was not succesful, he found the code in the scanner and have erased it but the "theft system" led remains still on. He told me to do the following:

- open the switch;
- bump on the starter once,
- release the key but keeping the switch open.
- wait for a self recognition of the computer till the led get off before starting the car.

that was 2 days ago, I've realized this operation several times and nothing works yet, even I've waited 4 or 5 hours between operations,

After this I've disassembled all the dashboard in order to check wire status, I've found nothing. I've also checked all the motor harnesses and connections and have found one or two cables without isolation, have them isolated. I also have follow the computer harnesses and disconnect and reconnect them. Same malfunction, not more nor less.

I am urged to find a solution to this problem, please somebody help me with this problem.

Thank you for your support. Abelardo Glez, Mexico

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  • 8 Answers

I had the same thing and I had to do the bump starter and wait 10 min. and do it again.I did this for about 15 times.I was told that it depends on how far out of sink it had become.hope that it works for you.I asume that you do not have a chip in you key.

Posted on Sep 01, 2008

  • Jerry Monastyrski Aug 18, 2011

    I have a 1998 Sunfire with over 200,000 km on it. A year ago I started having problems with it starting but stopping right away. I tried many times over the past year and same thing. Also, all my dash lights stopped working, like the battery light, etc. I called a Pontiac service manager and explained the problem. He spoke with his electrical specialists. They said the cluster is the heart of the electrical system and if something is wrong with it, it will throw out the theft system and the car won't start. So I bought a dash cluster for $50 at an auto wrecker, took the dash apart, farily easy to do in a couple of hours, unplugged the driver airbag just in case, changed the cluster, put things back together, but it still wouldn't keep running. I read here to try starting the car and not turning the key back but just leaving it there with all the dash lights on and so the car can reset itself. I went back in 15 minutes and the theft light had stopped flashing and was off, and the car started and ran beautifully, go figure, $50.


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This ans other details can find it in this link for 1996 Pontiac Sunfire - Owners Manual.

I hope helps (remember to rate and comment this).

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